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## org.bouncycastle.crypto.util
Class PrivateKeyFactory

    java.lang.Object
      org.bouncycastle.crypto.util.PrivateKeyFactory

public class PrivateKeyFactory
extends java.lang.Object

Factory for creating private key objects from PKCS8 PrivateKeyInfo objects.

Constructor Summary
`PrivateKeyFactory()`

Method Summary
`static AsymmetricKeyParameter` | `createKey(byte[] privateKeyInfoData)` Create a private key parameter from a PKCS8 PrivateKeyInfo encoding.
`static AsymmetricKeyParameter` | `createKey(java.io.InputStream inStr)` Create a private key parameter from a PKCS8 PrivateKeyInfo encoding read from a stream.
`static AsymmetricKeyParameter` | `createKey(PrivateKeyInfo keyInfo)` Create a private key parameter from the passed in PKCS8 PrivateKeyInfo object.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PrivateKeyFactory

    public PrivateKeyFactory()

Method Detail

### createKey

    public static AsymmetricKeyParameter createKey(byte[] privateKeyInfoData)
                                            throws java.io.IOException

  Create a private key parameter from a PKCS8 PrivateKeyInfo encoding.

  Parameters:
    `privateKeyInfoData` - the PrivateKeyInfo encoding
  Returns:
    a suitable private key parameter
  Throws:
    `java.io.IOException` - on an error decoding the key

### createKey

    public static AsymmetricKeyParameter createKey(java.io.InputStream inStr)
                                            throws java.io.IOException

  Create a private key parameter from a PKCS8 PrivateKeyInfo encoding read from a stream.

  Parameters:
    `inStr` - the stream to read the PrivateKeyInfo encoding from
  Returns:
    a suitable private key parameter
  Throws:
    `java.io.IOException` - on an error decoding the key

### createKey

    public static AsymmetricKeyParameter createKey(PrivateKeyInfo keyInfo)
                                            throws java.io.IOException

  Create a private key parameter from the passed in PKCS8 PrivateKeyInfo object.

  Parameters:
    `keyInfo` - the PrivateKeyInfo object containing the key material
  Returns:
    a suitable private key parameter
  Throws:
    `java.io.IOException` - on an error decoding the key

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